"u20683" . "VANE COMPRESSOR" . "RDS444644" . "'Vane type vacuum pump' is a synonym. 'Sliding vane compressor' is a synonym." . "Recorded" . "VANE COMPRESSOR" . "SLIDING VANE COMPRESSOR VANE TYPE VACUUM PUMP" . "691200" . . "1999.09.15" . "A rotary compressor which contains vanes sliding radially in and out of a rotor excentrically mounted within a cylindrical casing. Gas trapped between the vanes is compressed and displaced." .